birthday suit vs straw

birthday suit

noun
  • Nakedness, unclothed skin; an exposure of a human's natural anatomy without clothing. 

  • Used other than figuratively or idiomatically: see birthday, suit. 

straw

noun
  • Anything proverbially worthless; the least possible thing. 

  • A pale, yellowish beige colour, like that of a dried straw. 

  • A dried stalk of a cereal plant. 

  • Such dried stalks considered collectively; this bulk matter may be a chief salable product, a by-product, fodder, bedding, or green manure, depending on region and on current market conditions. 

  • A drinking straw. 

adj
  • Made of straw. 

  • Of a pale, yellowish beige colour, like that of a dried straw. 

  • Imaginary, but presented as real. 

verb
  • To lay straw around plants to protect them from frost. 

How often have the words birthday suit and straw occurred in a corpus of books? (source: Google Ngram Viewer )